diff --git a/code/game/machinery/_machinery.dm b/code/game/machinery/_machinery.dm
index 728df8ba25cc..d63354c8acfb 100644
--- a/code/game/machinery/_machinery.dm
+++ b/code/game/machinery/_machinery.dm
@@ -410,6 +410,9 @@
 /obj/machinery/proc/close_machine(atom/movable/target, density_to_set = TRUE)
 	state_open = FALSE
 	set_density(density_to_set)
+		if (!density)
+		update_appearance()
+		return
 	if(!target)
 		for(var/atom in loc)
 			if (!(can_be_occupant(atom)))
diff --git a/code/modules/antagonists/changeling/powers/lesserform.dm b/code/modules/antagonists/changeling/powers/lesserform.dm
index 854234af965f..fd9af906107a 100644
--- a/code/modules/antagonists/changeling/powers/lesserform.dm
+++ b/code/modules/antagonists/changeling/powers/lesserform.dm
@@ -3,7 +3,7 @@
 	desc = "We debase ourselves and become lesser. We become a monkey. Costs 5 chemicals."
 	helptext = "The transformation greatly reduces our size, allowing us to slip out of cuffs and climb through vents."
 	button_icon_state = "lesser_form"
-	chemical_cost = 5
+	chemical_cost = 25
 	dna_cost = 1
 	/// Whether to allow the transformation animation to play
 	var/transform_instantly = FALSE
@@ -25,6 +25,7 @@
 	..()
 	return ismonkey(user) ? unmonkey(user) : become_monkey(user)
 
+
 /// Stop being a monkey
 /datum/action/changeling/lesserform/proc/unmonkey(mob/living/carbon/human/user)
 	if(user.movement_type & VENTCRAWLING)
diff --git a/code/modules/mob/living/carbon/human/species_types/zombies.dm b/code/modules/mob/living/carbon/human/species_types/zombies.dm
index b7f9b81de523..fe0307afdf52 100644
--- a/code/modules/mob/living/carbon/human/species_types/zombies.dm
+++ b/code/modules/mob/living/carbon/human/species_types/zombies.dm
@@ -92,7 +92,7 @@
 	mutanttongue = /obj/item/organ/internal/tongue/zombie
 	changesource_flags = MIRROR_BADMIN | WABBAJACK | ERT_SPAWN
 	/// The rate the zombies regenerate at
-	var/heal_rate = 0.5
+	var/heal_rate = 0.6
 	/// The cooldown before the zombie can start regenerating
 	COOLDOWN_DECLARE(regen_cooldown)
 
@@ -112,6 +112,7 @@
 		TRAIT_RESISTHIGHPRESSURE,
 		TRAIT_RESISTLOWPRESSURE,
 		TRAIT_TOXIMMUNE,
+		TRAIT_NO_PAIN_EFFECTS,
 		// INFECTIOUS UNIQUE
 		TRAIT_STABLEHEART, // Replacement for noblood. Infectious zombies can bleed but don't need their heart.
 		TRAIT_STABLELIVER, // Not necessary but for consistency with above